Installing The Heatsink Assembly - Dell Precision 3640 Tower Service Manual

Steps
1. Disconnect the heatsink fan cable from the connector on the system board.
2.
NOTE: Loosen the screws in a sequential order (1,2,3,4) as mentioned on the system board.
Loosen the four captive screws that secure the heatsink assembly and lift it from the system board.

Installing the heatsink assembly

Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following images indicate the location of the heatsink assembly and provides a visual representation of the installation
procedure.
Figure 6. Heatsink assembly - 65 W or 80 W CPU
Disassembly and reassembly 63